Tvheadend

Hello, I just installed the program under mythbuntu 11.04. I'd like to use this together with xbmx on my htpc. I installed the program without trouble, but when i try to make the configuration it seems something is strange. I do have 2 DVB-Cards installed, the DVB-T and DVB-S card double tuner. For the moment I have only installed the DVB-T tuner (Philips TDA10046H DVB-T). When I choice the adapter Autodetect muxes and Idle scanning is check marked I press afterwards the ADD DVB Network by location. I choice Denmark and thats so far fine. I press save and than something should happen, but I see only 48 muxes and 0 initial scan. What is the reason for this mess, do I make something wrong?

cu
Alf